Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
  • C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
  • C07D277/20—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D277/32—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D277/38—Nitrogen atoms
  • C07D277/44—Acylated amino or imino radicals
  • C07D277/46—Acylated amino or imino radicals by carboxylic acids, or sulfur or nitrogen analogues thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
  • A61P17/16—Emollients or protectives, e.g. against radiation
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
  • A61Q19/02—Preparations for care of the skin for chemically bleaching or whitening the skin
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
  • C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
  • C07D277/20—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D277/32—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D277/38—Nitrogen atoms
  • C07D277/44—Acylated amino or imino radicals
  • C07D277/48—Acylated amino or imino radicals by radicals derived from carbonic acid, or sulfur or nitrogen analogues thereof, e.g. carbonylguanidines

Definitions

• the present invention relates to new alkylamidothiazoles, to cosmetic or dermatological preparations with a content of one or more such alkylamidothiazoles and to the use of such alkylamidothiazoles or preparations comprising such alkylamidothiazoles for combating or preventing undesired pigmentation of the skin.
• Melanocytes are responsible for the pigmenting of the skin; these are found in the lowest layer of the epidermis, the Stratum basale, alongside the basal cells as pigment-forming cells which, depending on the skin type, occur either individually or in clusters of varying size.
• Melanocytes contain, as characteristic cell organelles, melanosomes, in which the melanin is formed. Inter alia, upon stimulation by UV radiation, melanin is formed to a greater extent. This is transported via the living layers of the epidermis (keratinocytes) ultimately into the horny layer (corneocytes) and brings about a more or less pronounced brownish to brown-black skin color.
• DHICA and DHI melanin are formed via the common intermediates dopaquinone and dopachrome. The latter, sometimes with the participation of further enzymes, is converted either to indol-5,6-quinonecarboxylic acid or into indol-5,6-quinone, from which the two specified eumelanins are formed.
• pheomelanin proceeds inter alia via the intermediates dopaquinone and cysteinyldopa.
• the expression of the melanin-synthesizing enzymes is controlled by a specific transcription factor (microphthalmia-associated transcription factor, MITF).
• MITF microphthalmia-associated transcription factor
• the transfer of the melanosomes, their stay in the epidermis and also their degradation and the degradation of the melanin are also of decisive importance for the pigmenting of the skin. It was shown that the PAR-2 receptor is important for the transport of the melanosomes from the melanocytes into the keratinocytes (M. Seiberg et al., 2000, J. Cell. Sci., 113:3093-101).
• size and shape of the melanosomes have an influence on their light-scattering properties and thus the color appearance of the skin. For example, in black Africans there are more large spheroidal individual melanosomes, whereas in Caucasians, smaller melanosomes occurring in groups are to be found.
• UV radiation e.g. freckles, Ephelides
• genetic disposition e.g., incorrect pigmentation of the skin during wound healing or scarring (post-inflammatory hyperpigmentation) or skin aging (e.g. Lentigines seniles ).
• skin-peeling methods (chemical and mechanical “peels”) are used, although these often lead to inflammatory reactions and, on account of post-inflammatory hyperpigmentations which may subsequently arise, can even lead to greater pigmentation instead of reduced pigmentation. All of these customary methods, which are also used for treating post-inflammatory hyperpigmentations, are characterized by distinct side effects.
• hexadecene-1,16-dicarboxylic acid Mention is to be made here inter alia of hexadecene-1,16-dicarboxylic acid, kojic acid and derivatives, arbutin, ascorbic acid and derivatives, flavonoids, ellagic acid and derivatives, tranexamic acid and various resorcinol derivatives, such as e.g. 4-n-butylresorcinol, 4-n-hexylresorcinol and 4-(1-phenylethyl)benzene-1,3-diol.
• resorcinol derivatives such as e.g. 4-n-butylresorcinol, 4-n-hexylresorcinol and 4-(1-phenylethyl)benzene-1,3-diol.
• Rings around the eyes can likewise be formed as a result of a pigmentation disorder, with them in addition also appearing as a reaction to general stress, such as e.g. too little sleep or simply as a result of overexerting the eyes.
• general stress such as e.g. too little sleep or simply as a result of overexerting the eyes.
• the symptoms disappear again after an adequate nighttime rest, but, over prolonged periods, the condition can become chronic and very troublesome for those affected.
• Said thiazoles can either be in the form of the free base or the salt: e.g. fluoride, chloride, bromide, iodide, sulfate, carbonate, ascorbate, acetate or phosphate.
• halogen salts such as e.g. chloride and bromide.
• treatment and/or prophylaxis of undesired skin pigmentation can be both in the cosmetic sphere and in the pharmaceutical sphere.
• the pharmaceutical (or dermatological) treatment is primarily understood for diseased skin conditions, whereas the cosmetic treatment and/or prophylaxis of undesired skin pigmentation primarily relates to healthy skin.
• X is selected from the group of substituted phenyls, in which case the substituents (Z) can be selected from the group —H, —OH, —F, —Cl, —Br, —I, —OMe, —NH 2 , —CN, acetyl and can be identical or different.
• X is selected from the group of phenyl groups substituted with one or more hydroxy groups, in which case the substituent (Z) can be selected from the group —H, —OH, —F, —Cl, —Br, —I, —OMe, —NH 2 , —CN, acetyl, and preference is given to the following generic structure in which Y, R 1 and R 2 can have the properties defined above.
• R 1 —C 1 -C 24 -alkyl (linear and branched), —C 1 -C 24 -alkenyl (linear and branched), —C 1 -C 8 -cycloalkyl, —C 1 -C 8 -cycloalkyl-alkylhydroxy, —C 1 -C 24 alkylhydroxy (linear and branched), —C 1 -C 24 alkylamine (linear and branched), —C 1 -C 24 -alkylaryl (linear and branched), —C 1 -C 24 -alkylaryl-alkyl-hydroxy (linear and branched), —C 1 -C 24 -alkylheteroaryl (linear and branched), —C 1 -C 24 -alkyl-O—C 1 -C 24 -alkyl (linear and branched), —C 1 -C 24 -alky-morpholino,
• R 1 —C 1 -C 24 -alkyl (linear and branched), —C 1 -C 24 -alkenyl (linear and branched), —C 1 -C 8 -cycloalkyl, —C 1 -C 8 -cycloalkyl-alkylhydroxy, —C 1 -C 24 -alkylhydroxy (linear and branched), —C 1 -C 24 alkylamine (linear and branched), —C 1 -C 24 -alkylaryl (linear and branched), —C 1 -C 24 -alkyl-aryl-alkyl-hydroxy (linear and branched), —C 1 -C 24 -alkylheteroaryl (linear and branched), —C 1 -C 24 -alkyl-O—C 1 -C 24 -alkyl (linear and branched), —C 1 -C 24 alky-morpholino
• the alkylamidothiazoles according to the invention have a higher galenical stability and/or increased effectiveness compared to the corresponding alkylaminothiazoles.
• the amines and amides were dissolved in butylene glycol—optionally with heating—and added to the emulsion before the first homogenization at ca. 65° C. All of the active ingredients were incorporated in a concentration of 0.1% in the experimental batches.
• the emulsion was poured into 20 ml glass vials for the storage tests and stored under various standard conditions (room temperature, light and 40° C.).
• the stored samples were analyzed after 14 days.
• the samples to be measured were extracted in a methanol/water mixture [70:30] and determined by means of HPLC-DAD. The determination was carried out by means of external standard calibration [reference section]. The evaluation was carried out at 296 nm.
• Cosmetic or dermatological preparations with a content of alkylamidothiazoles and their use for the treatment and/or prophylaxis of undesired skin pigmentation are likewise advantageous embodiments of the present invention.
• such preparations comprise 0.000001 to 10% by weight, in particular 0.0001 to 3% by weight, very particularly 0.001 to 1% by weight, of one or more of the alkylamidothiazoles according to the invention, based on the total weight of the preparation.
• Cosmetic and dermatological preparations according to the invention can be in various forms. Thus, they can be e.g. a solution, an anhydrous preparation, an emulsion or microemulsion of the water-in-oil (W/O) type or of the oil-in-water (O/W) type, a multiple emulsions, for example of the water-in-oil-in-water (W/O/W) type, a gel, a solid stick, a balm or else an aerosol. It is also advantageous according to the invention to administer the substances used according to the invention and/or their derivatives in encapsulated form, e.g. in collagen matrices and other customary encapsulation materials, e.g. as cellulose encapsulations, in gelatin or liposomally encapsulated.
• W/O water-in-oil
• O/W oil-in-water
• a multiple emulsions for example of the water-in-oil-in-water (W/O/W
• the oil phase of the emulsions, oleogels or hydrodispersions or lipodispersions within the context of the present invention is advantageously selected from the group of esters of saturated and/or unsaturated, branched and/or unbranched alkanecarboxylic acids of chain length from 3 to 30 carbon atoms and saturated and/or unsaturated, branched and/or unbranched alcohols of chain length from 3 to 30 carbon atoms, from the group of esters of aromatic carboxylic acids and saturated and/or unsaturated, branched and/or unbranched alcohols of chain length from 3 to 30 carbon atoms.
• ester oils can then advantageously be selected from the group isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl oleate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, isooctyl stearate, isononyl stearate, isononyl isononanoate, 2-ethylhexyl palmitate, 2-ethylhexyl laurate, 2-hexyldecyl stearate, 2-octyldodecyl palmitate, oleyl oleate, oleyl erucate, erucyl oleate, erucyl erucate, and synthetic, semisynthetic and natural mixtures of such esters, e.g. jojoba oil.
• mixtures of the aforementioned solvents are used.
• water may be a further constituent.
• Emulsions according to the invention are advantageous and comprise e.g. said fats, oils, waxes and other fatty bodies, and also water and an emulsifier, as is usually used for such a type of formulation.
• Suitable propellants for preparations according to the invention which can be sprayed from aerosol containers are the customary known readily volatile, liquefied propellants, for example hydrocarbons (propane, butane, isobutene), which can be used on their own or in a mixture with one another. Compressed air can also advantageously be used.

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• Health & Medical Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Dermatology (AREA)
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• Birds (AREA)
• Engineering & Computer Science (AREA)
• Medicinal Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Pharmacology & Pharmacy (AREA)
• Toxicology (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Cosmetics (AREA)
• Thiazole And Isothizaole Compounds (AREA)
• Plural Heterocyclic Compounds (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

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• 2011
  • 2011-09-23 DE DE102011083259A patent/DE102011083259A1/de not_active Withdrawn
• 2012
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